Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 9 of 9 for “"red giant stars"”.
-
Investigating the Relationship Between Chemical Abundance Ratios and Ages in Red Giant Stars
… mission, the measurement of stellar ages for red giant stars, has been a challenge. Red giants are important to study because they span a large range of ages, and, due to their intrinsic brightness, allow us to probe further in the Galaxy. Recent developments have enabled the large-scale usage …
-
Investigating the Relationship Between Chemical Abundance Ratios and Ages in Red Giant Stars
… mission, the measurement of stellar ages for red giant stars, has been a challenge. Red giants are important to study because they span a large range of ages, and, due to their intrinsic brightness, allow us to probe further in the Galaxy. Recent developments have enabled the large-scale usage …
-
Resolved stellar populations: watching galaxy evolution in real time
… photometry was performed using a few hundreds of point sources, selected from non-crowed areas, to fit the point-spread functions. This process, however, was repeated a couple of times in order to get a well adjusted point-spread function with the least residuals possible. The instrumental …
-
Magnetic fields and stellar oscillations
Stars are fluid bodies in which pressure, buoyancy, rotation and magnetism provide the restoring forces for wave propagation. Constructive interference of these waves generates global modes of oscillation. With sufficiently precise photometry, stellar oscillations can be detected through the …
-
Star Cluster Formation and Galactic Assembly: from instrumentation, to observations and simulations
… precision, differential abundance analysis of 15 red giant stars in the potential cluster siblings, NGC 288 and 362. Both clusters show sta- tistically significant dispersion in both iron and heavy elements, seemingly at odds with the current classifications of GCs. The dynamical evolution of GCs …
-
Star Cluster Formation and Galactic Assembly: from instrumentation, to observations and simulations
… precision, differential abundance analysis of 15 red giant stars in the potential cluster siblings, NGC 288 and 362. Both clusters show sta- tistically significant dispersion in both iron and heavy elements, seemingly at odds with the current classifications of GCs. The dynamical evolution of GCs …
-
Disentangling the chemodynamical history of the Milky Way disc with asteroseismology and spectroscopy
… we can observe millions of its individual stars whose kinematics and chemical composition are records of the evolution of our Galaxy. Thanks to the advent of multi-object spectroscopic surveys, we can systematically study stellar populations in a much larger volume of the Milky Way. While …